Heel-trimming machine cutter



(No Model.) 3 Sheets-Sheet 0. H. T RASK. HEEL TRIMMING MACHINE CUTTER.

No. 357,742. PatentedFeB. 15; 18874.

3 Sheets-Sheet 2. G. HqTRASK.

HEEL TRIMMING MAGHINE CUTTER.

Patented Feb. 15, 1887.

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O. 'H. TRASK. HEEL TRIMMING MACHINE O'UTTER.

No. 357,742. Patented Feb..15, 188'7.-

UNITED STATES PATENT OFFICE.

CHARLES II. TRASK, OF LYNN, MASSACHUSETTS.

HEEL-TRIMMING MACHINE CUTTER.

SPECIFICATION forming part of Letters Patent No. 357,742, dated February 15, 1887.

Application filed July 27, 1886. Serial No. 209,198. (No model.) 4

To all whom it may concern:

Be it known that I, CHARLES H. TRASK, of Lynn, in the county.of Essex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Cutters for Heel-Trimming Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

This invention is an improvement in part upon that described in my application for Letters Patent of the United States filed June 15, 1886, Serial N0..205,202, in so far as it relates to the heel-rest, the top-lift guide, and guard and rest; and it comprises various improvements whereby I am enabled to adjust the top-lift guide and rest in relation to its support and to the cutter; also, to means for adjusting the cam or pat-tern employed for governing the position of the top-lift guide and rest in relation to the cutter as it is moved laterally; also, to the manner of supporting the heelrest.

It further relates to a cutter made from a solid block of metal having a-hole formed therethrough for the reception of the shaft, a central cavity formed therein, cutting edges provided by removing sections of the block from end to end extending to the interior cavity, so that there is produced in effect a cutter having strap-knives which are integral with the end sections thereof and a hollow center whereby I am enabled to produce a very strong and durable outterone that can be cheaply made and is very efficient and quick in its action.

Referring to the drawings, Figure l is a view in elevation. of the solid block from which the cutter is formed. Fig. 2 is a view in central section thereof, representing it after the shaft-hole has been formed therein. Fig. 3 is a view in central section representing theinterior of the block renioved. Fig. 4. is a view in end elevation thereof, showing cuts which extend to the cavity and form the teeth. Fig. 5 is a view in side elevation thereof. Fig. 6 is a vertical section upon the line 00 m of Fig. 5. Fig. 7 is a View in elevation of the upper part or head of my heel-trimming machine, show ing the principal operating parts. Fig. 8 is a section upon the line 3 y of Fig. 7. Fig. 9 is an end elevation thereof. Fig. 10 is a detail View of the cam or pattern and its adjusting devices. Fig. 11 is a view of the top-lift guide and rest,the collar supporting it, and the heelrest. Fig. 12 is a View in elevation of these parts. Fig. 13 is' a rear elevation of the parts shown in Fig. 11.

A is the shaft, which supports at its end the heel-trimmer a. It is mounted on the head A, and has a pulley, a, which is run by the belt a Bis a plate, having a hole, I), of sufficient size to receive the inner end of the heel cutter or trimmer a. It has a long sleeve, 1), which fits thestud 1), extending horizontally from the head A parallel with the shaft A. The stud also has a coil-spring, I)", which bears against the end of the sleeve 1) and the side of the head A. The plate B supports the annular disk 0, which has the top-lift guide 0 and toplift rest 0. It has a hole, 0, sufficiently large to surround the cutter at its rear end, and it is fitted or secured to the plate B so as to be adjustable thereon by means of the bolts 0 which pass through enlarged holes or slots 0 in the plate B, so that by loosening the bolts the position of the plate G upon the plate B may be varied to any desired extent to secure the proper relation of the top-lift guide to the trimmer. The plate B also supports the heelrest D by means of an arm, I). The heel-rest is supported by this arm by means of the screw stud d, which passes through the hole (1 in the arm, and the spindle clflwhich passes through the hole d in the arm, and may bear a coilspring, (1*, when it is desired that the rest shall have a horizontal movement in relation to the top-lift rest and guide as well as laterally in relation tcthe cutter.

The screw-stud and spindle permit the rest to be moved or held by the work while the toplift rest is being moved by the work horizontally to expose the cutter, and the spring serving to return the rest upon the removal of the work. It can readily be secured to the plate 13, so as to bear a fixed relation to the toplift guide and rest,by means of the nut d upon the screw-stud d.

The top-lift plate 13, and consequently the toplift rest and guide and the heel-rest, are movable bythe work to expose sections of the cutter as the length of the surface of the heel to be cut increases, as described in my said application,and the top-lift rest and guide are automatically maintained in proper position in relation to the cutter as they are thus moved.

In order to economically obtain variation in the shape to the cam or pattern employed for guiding the top-lift rest or guide and plate to which it is fastened during this movement, I have provided a pattern or cam, E, which is adjustable in relation to. its support 6. The pattern or cam has an arm, 0, which extends into a hole in the support, and this arm is pivoted by the pivot e to the said support Two screw-studs, 6 one upon each side of the arm 6, are arranged to bear against each end of the cam or pattern IE), and by slackening one screw and tightening another it is obvious that the inclination or guiding-surface of the cam or pattern may be very quickly or easily changed.

The plate 13 has an arm, F, the end of which rests upon this cam or pattern, as described in my said application; and I have arranged the adjustable stopf upon the cam or pattern to regulate the extent of the forward movement of this arm, and consequently of the toplift rest and guide. I may also use a light spring, f, attached to the arm F and to the head A, for holding the arm Fin contact with the pattern or cam E.

The movement of the toplift guide and rest in relation to the cutting-edge of the trimmer is similar to that described in my said appli cation, and the cam or pattern must be of a shape to give them the necessary movements. For instance, it is essential that the top-lift guide should, during the trimming operation, be at a uniform distance from the cutting-edge of the cutter, regardless of its lateral movement in relation to the cutter, and this movement must be maintained during its lateral movement in relation to the cutter, or while it is being moved by the work to increase the length of the cut by uncovering the section of the cutter, or by the spring in a reverse direction when it is necessary to decrease the length of the cutting-section of the trimmer. It is obvious that this relationship of the guide to the edge of the cutter would not be maintained if the movement of the rest were upon a straight horizontal line, as it would not then be following the line of the cutting-edges of the cutter; and in order that it may follow such linethat is, a curved line, where one end is pivoted to a support, asis the case with the top-lift rest and guide which I have describedit is necessary to give the guide a movement in a spiral direction in relation to the edge of the trimmer or cutter, and this movement is provided by the cam or pattern E, and the arm which extends from the plate bearing the top-lift guide is arranged to bear upon the cam or pattern and to have its vertical position changed thereby as it is moved horizontally thereon.

In making the cutter, I prefer to take a blank or block of round metal of suitable size and quality and reduce it, to provide its exterior surface with the conformation which it is desired that the finished cutters or cutting-sections shall have. A block thus reduced to shape is represented in. Fig. 1. It is then provided, by boring, with the central hole, g, and the interior of the blank is then further removed to provide a cavity or chamber, 9. This also so forms the block that the end sections, are shaped, and the exterior portion becomes a shell, The knives or cutt1ngedges are then formed by cutting through the shell upon any desired angle into the cavity or chamber and into the end sections of the cutter, and this provides the series of cutting: edges or cuttersg, which extend from one end ot the block to the other, and the intermediate spaces or recesses which also extend from one end of the cutter-block to the other, and which open into the interior cavity or chamber. As many of these cutters or cutting-edges may be formed as desired. The angle of the recess 9 may be varied as wished. The cutters are further shaped by making the exterior surface of each section forming a cutter curved, as represented at g, Figs. 4 and 6.

The'cntter as completed is shown in Figs. 4, 5, and 6, and in effect is a strap-knife cutter, integral throughout, having end sections WhIOh are connected by the cutting-sections, which are in the nature of strap-knives, but which are solid or integral with the end sections, and in fact the end sections form portions of the cutters or knives.

I also prefer to make the cutters or knives longer than the longest out which it will be necessary to make upon the heel for which the cutter is especially designed.

In operation the heel is presented to the cutter, its top lift resting against the top-lift rest, the edge of the top lift bearing against the top-lift guide, the rand-guide entering the rand-crease, and the side of the heel resting upon the heel-rest. It is then turned to present its entire surface to the cutter, and as the length of the surface to be cut varies, being longer at the back of the heel than at the side, the top-lift rest and guide are moved inward to expose more of the cutting-surface of the cutter, but their position in relation to the edge of the cutter is not varied so as to interfere with the proper action of the cutter by said movement, as the cam or pattern operates to govern this position during said movement; and as the heel-rest is operated by the device or plate which carries the top-lift rest and guide its vertical position relative to the top-lift guide and rest does not change during said movement, although its horizontal position relative thereto may or may not be changed, according as may be desired.

The heel-rest D may have an adjustment provided it by forming it in two parts, and providing the upper part with a turning move ment in relation to the lower part, whereby its surface may be turned to any required angle in relation to the edge of the cutter. This 357,742 l I a construction is well represented in Fig. 11, where I have represented this section h of the rest as provided with an arm, h, which is pivoted at h to the lower part, h of the rest. It is provided with this turning movement and held locked at any desired angle by means of the locking adjusting-screws h" 72 which extend from the section h to bear against the under surface of the part h.

I have shown in applications No. 204,324, filed June 7, 1886; Nos. 205,202, 205,203, and 205,204, filed June 15, 1886, certain of the features herein shown and specified; but I do not herein claim such matter. v

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- 1. The combination, in a heel-trimming machine, of a rotary cutter, the laterally-movable plate B, having an opening or hole, b, of sufficient size to embrace the inner end of the cutter, a disk, 0, having the top-lift guide 0 and top-lift rest 0, secured to said movable plate B, and means for adjusting it thereon and locking it thereto, substantially as described.

2. In a heel-trimming machine, the combination of a rotary cutter, a top-lift rest and guide, a movable plate, B, supporting the same, a spring or springs for moving it inward or toward or upon the cutter, and an adjustable pattern or cam, E, all substantially as described.

3. The combination, in a heel-trimming machine, of a cam or pattern for controlling the position of the top-lift rest and guide pivoted to its rest or support, and the locking adjusting-screws e, substantially as described.

4. The combination, in a heel-trimming ma chine, ofa rotary cutter, a laterally'movable plate, B, having a hole, b, adapted to inclose the inner end of the cutter, the top-lift rest 0, a top-lift guide, 0, and the heel-rest D, supported by said laterally-movable plate B, substantially as described.

5. The combination, in a heel-trimmer, of a rotary cutter, a support, B, movable transversely the cutter in opposition to the springpressure, a top -lift rest and guide carried thereby, a heel-rest supported thereby, and a cam or pattern for governing the movement of the top-lift rest and guide and heel-rest in relation to the cutter during said transverse movement of the support, substantially as described.

6. The combination of the support B with the rotary cutter, and the heel-rest carried by said support and movable transversely in relation thereto, and a spring for moving the rest outward from the support, substantially as described.

7. The combination, in a heeltrimmer, of the rotary cutter, the support B, the hee1-rest, its standard or studs (1 d", and spring (1*, sub stantially as described.

8. -A cutter for a heel-trimming machine, having the center removed to form a shell, and the end sections, 9 9", having the teeth 9* formed by the recesses 9 extending through the shell to the hollow section of the cutter, substantially as described.

9. A strap-knife cutter for heel-trimming machinescomprising the end sections, 9 9', having the shaft-hole g, and the cutting-sections 9, made integral with the end sections, substantially as described.

CHARLES H. TRASK.

Witnesses:

F. F. RAYMOND, 2d, FRED. B. DOLAN. 

